Update next-themes version and refactored filename

The commit includes updating the version of 'next-themes' from 0.2.1 to 0.3.0. Also, it refactors the filename in 'packages/i18n/package.json' from 'I18nProvider.tsx' to 'i18n-provider.tsx' following better naming convention and readability. It consolidates a few other version changes in 'pnpm-lock.yaml' to maintain the package dependencies updated and correct.

packages/i18n/src/i18n-provider.tsx

@@ -0,0 +1,41 @@
+'use client';
+
+import type { i18n } from 'i18next';
+
+let client: i18n;
+
+type Resolver = (
+  lang: string,
+  namespace: string,
+) => Promise<Record<string, string>>;
+
+export function I18nProvider({
+  lang,
+  children,
+  resolver,
+}: React.PropsWithChildren<{
+  lang: string;
+  resolver: Resolver;
+}>) {
+  if (!client) {
+    throw withI18nClient(lang, resolver);
+  }
+
+  return children;
+}
+
+async function withI18nClient(lang: string, resolver: Resolver) {
+  if (typeof window !== 'undefined') {
+    client = await loadClientI18n(lang, resolver);
+  } else {
+    const { initializeServerI18n } = await import('./i18n.server');
+
+    client = await initializeServerI18n(lang, resolver);
+  }
+}
+
+async function loadClientI18n(lang: string | undefined, resolver: Resolver) {
+  const { initializeI18nClient } = await import('./i18n.client');
+
+  return initializeI18nClient(lang, resolver);
+}